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CASH DIVIDENDS (Details) - $ / shares
3 Months Ended 6 Months Ended
Jul. 30, 2021
Jun. 24, 2021
Apr. 30, 2021
Apr. 14, 2021
Jul. 31, 2020
Apr. 30, 2020
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
CASH DIVIDENDS                    
Regular cash dividend declared per common stock   $ 0.25   $ 0.25     $ 0.25 $ 1.25 $ 0.50 $ 1.50
Special cash dividend paid per common stock         $ 1.00          
Regular cash dividend paid per common stock $ 0.25   $ 0.25   $ 0.25 $ 0.25